Li Shan also told the third Prince that in her dream, noble consort Lin and the seventh Prince would deal with him, and that the ice cellar incident was planned by noble consort Lin.
As a Prince, he naturally knew what this meant.
Therefore, when Li Shan told the third Prince that the heir of Duke Zhengguo's mansion, Lu Zheng, was not dead and that Lu Zheng and Gu shouxin would join the seventh Prince in the future, the third Prince had no doubts at all.
Li Shan also said that the Emperor especially liked the Gu family and could use this opportunity to get rid of the Gu family. Of course, even if he couldn't get rid of them, he couldn't let the Gu family stay in the capital.
Li Shan did not know where Lu Zheng had gone. She guessed that Lu Zheng might have transported the seeds to Jiangnan or to Thailand. She asked the third Prince to keep an eye on Lu Zheng.